Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
ke cau » ket cau
vi cua » vai cua, di cua
luc va » duc va, tuc va, loc va
te san » te ban, ke san, tu san
san ky » sang ky, van ky, dan ky
va cau » van cau, va cac, va dau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te san ky ((nang ma) or (sang ma)) hoi. hieu ((va cau) or (ke cau)) luc va thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te san ky ((nang ma) OR (sang ma)) hoi. hieu ((va cau) OR (ke cau)) luc va thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te san ky ((nang ma) or (sang ma)) hoi. hieu ((va cau) or (ke cau)) luc va thanh vi cua tre*.